I can't bring myself to buy into the whole VR thing until the technology improves. As it stands Nvidias 3dvision (which they just dropped) does a much better job at most of the things VR does without needing to put a helmet on.
3D on monitor is great but the problem is low FOV. You will never feel how something is big until you get wide FOV. I played for years Nintendo 3DS so i kind of have years of experience with low fov 3D and when i changed to Vr headset it completely changed my mind.
It is not just 3D. You need both head movement, wide FOV and 3D. Then it makes you WOW.
But i agree generally until we get something like 2k per eye it is hard to recommend for non enthusiasts. Main issue with low res screens is that UI elements are hard to read and almost any text. You can get used to low res in gameplay but you can't get used to text you can't read.
IMHO the biggest obstacle for VR right now are enthusiast themselves. People just don't want to play those motion games. They want normal games in VR with headmovement and 3D. Motion controlers are really fucking expensive driving cost of adoption and experiences are pretty much indie garbage games or phone games quality.